Finding the Fourth Proportional to 890,068.86, 1,335,185.37 and 291,033.09

Step by Step Solution

1. Step 1: Write the proportion equation
   890,068.86 : 1,335,185.37 = 291,033.09 : x
2. Step 2: Convert to fraction form
   890,068.86/1,335,185.37 = 291,033.09/x
3. Step 3: Cross multiply
   890,068.86x = 1,335,185.37 × 291,033.09
4. Step 4: Simplify right side
   890,068.86x = 388,583,123,953.89
5. Step 5: Solve for x
   x = 388,583,123,953.89/890,068.86
6. Step 6: Final answer
   x = 436,576.47